first commit delong_test

[gpucce]

Here is the starting pull request, indeed the way you implement roc does not really matter since one needs to compute from tar, nontar anyway, I will add documentation to the functions, though I don't really know what to write. I also add a link to an explanation of what the test is supposed to do.

If you think this is not useful or anything just delete it or if it needs strong changes tell me I am happy to try to do it.

[davidavdav]

OK, thanks, perhaps add a couple of test cases, which are useful if we change the coding style a little here and there, to make sure we're still doing the right thing

[gpucce]

Sure I will, I started very enthusiastic but then work kicked in xD in the next days I'll add the tests.

[gpucce]

Tests added!! Let me know if they are enough.

[davidavdav]

In github I see a few files that end without a newline, could you add these please?